R.V.R. Elettronica TEX100 User Manual
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R.V.R. Elettronica TEX100 User Manual

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TEX100
TEX100/S
User Manual
Volume 1
Manufactured by
Italy

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Summary of Contents for R.V.R. Elettronica TEX100

  • Page 1 TEX100 TEX100/S User Manual Volume 1 Manufactured by Italy...
  • Page 2 First electronic version M. Morotti New format in 2 volumes 01/07/03 D. Canazza New Main card TEX100 - User Manual Version 4.0 © Copyright 1993-2003 R.V.R. Elettronica SpA Via del Fonditore 2/2c - 40138 - Bologna (Italia) Telefono: +39 051 6010506...
  • Page 3 Limitations of use can apply in respect of operating freuency, transmitter power and/or channel spacing. Declaration of Conformity Hereby, R.V.R. Elettronica SpA, declares that this FM transmitter is in compliance with the essential requirements and other relevant provisions of Directive 1999/5/EC.
  • Page 4 This page intentionally left blank...

  • Page 5: Table Of Contents

    4. General Description 5. Installation and Use Quick Start 5.1 Preparation 5.2 Use 5.3 Operation using the Internal Stereo Encoder (TEX100/S) 5.4 Operation using an External Stereo Encoder 5.5 Monophonic Transmission 6. External Description 6.1 Front Panel (TEX100/S stereo version) 6.2 Front Panel (TEX100 mono version)
  • Page 6 TEX100 This page was intentionally left blank Rev. 4.0 - 18/07/03 User Manual...

  • Page 7: Preliminary Instructions

    Operating this equipment in a residential environment may give rise to radio disturbance; if so, the user may be asked to take appropriate counter measures. R.V.R. Elettronica SpA reserves the right to make modifications to the design and technical specifications of the equipment, and to update this manual without notice.
  • Page 8 TEX100 This page was intentionally left blank 2 / 42 Rev. 4.0 - 18/07/03 User Manual...

  • Page 9: Warranty

    TEX100 2. Warranty The guarantee, which is for 12 (twelve) months, is valid for any R.V.R. Elettronica product. On components such as tubes for final amplifiers, the manufacturer’s guarantee applies. R.V.R. Elettronica extends all transferable original guarantees to its own products.
  • Page 10 TEX100 Replacement of parts under guarantee or spare parts can be ordered from the following address: R.V.R. Elettronica SpA Via del Fonditore, 2/2c 40138 BOLOGNA ITALY Tel. +39 051 6010506 quoting type, model and serial number of the device. 4 / 42 Rev.

  • Page 11: First Aid

    TEX100 3. First Aid Personnel involved in the installation, use, and maintenance of the equipment must be familiar with the theory and practice of first aid. 3.1 Treating electric shocks 3.1.1 If the victim is inconscious Follow the first aid principles described below.

  • Page 12: Treating Electric Burns

    TEX100 • Do not interrupt the cardiac massage during the artificial respiration. • Call a doctor as soon as possible 3.1.2 If the victim is conscious • Cover the victim with a blanket • Keep him calm. • Loosen the victim’s clothes and keep him lying down •...

  • Page 13: General Description

    TEX100 4. General Description The TEX100 is an exciter working in the 87.5 to 108 MHz band, programmable in steps of 10KHz. Its power output is continuously adjustable from 5W to 100W into a 50 Ohm load and it’s contained in a 19” rack mountable 3HE case.
  • Page 14 The RF amplifier is a wide-band design and guarantees an adjustable power output up to 100 watts across the entire FM band. A low-pass filter enables the TEX100 to be used as a low power transmitter, connected directly to an antenna: the harmonic emissions are reduced under the levels allowed from the international norms, like CCIR or FCC.

  • Page 15: Installation And Use Quick Start

    TEX100 5. Installation and Use Quick Start This chapter gives a concise view of the points that are necessary for the installation of the device. If any item is not completely clear, for example when you use the exciter for the first time, we strongly suggest to read throughly the manual.

  • Page 16: Use

    NOTE: Transmitting outside the legal band (87.5-108 MHz) is an offence and may lead to prosecution. For this reason, the TEX100 can be equipped on demand with a device that prevents the transmission on various frequencies from those concurred.
  • Page 17 TEX100 Switch On the TEX100 and check that the three green internal voltage led and the red UNLOCK led are all lit. After having verified that the UNLOCK led is switched off (about 30 sec.) and that the unit is therefore locked to the selected working frequency, switch the switch connected to the REMOTE connector so as to remove the short circuit between the central conductor and ground.

  • Page 18: Operation Using The Internal Stereo Encoder (Tex100/S)

    The maximum input sensitivity is determined by the position of the INPUT LEVEL control. In the -12/+9 position, the sensitivity will depend on the L/mpx and R/ mono controls. The following procedure is referred to a TEX100/S. For the Mono/MPX version, proceed in analogous way. Put the selector in the L/MPX position.

  • Page 19: Monophonic Transmission

    Adjust the output level of the encoder to obtain the correct level as displayed on the analog meter of the TEX100, typically 7,5 KHz. Inject audio signals into the left and right inputs of the encoder and adjust the sensitivity of the input (with both channels enabled) to obtain a peak reading of MAX=75KHz.
  • Page 20 TEX100 This page was intentionally left blank 14 / 42 Rev. 4.0 - 18/07/03 User Manual...

  • Page 21: External Description

    TEX100 6. External Description This chapter describes the elements of the front and rear panels of the TEX100. 6.1 Front Panel (TEX100/S stereo version) Figure 6.1 [1] STEREO/MONO MPX Selects STEREO or MONO/MPX operation [2] STEREO LED When lit, indicates the operation of the stereo encoder...

  • Page 22: Front Panel (Tex100 Mono Version)

    TEX100 6.2 Front Panel (TEX100 mono version) Figure 6.2 [1] L/MPX & R/MONO LEVEL Trimmer for the inputs levels regulation L/MPX and R/MONO; when the inputs levels selector [ 2 ] is turned completely in clockwise sense, the inputs levels can be regulated with...

  • Page 23: Rear Panel

    TEX100 6.3 Rear Panel Figure 6.3 [1] FUSE BLOCK Fuse block and line voltage selector. Use a small screwdriver to change the fuse or the line voltage. Rotate the block and position it so that the arrow corresponds to the working voltage wished...

  • Page 24: Descrizione Connettori

    TEX100 6.4 Descrizione Connettori 6.4.1 Sinistro (MONO) / Destro (MPX Bal) Tipo: XLR femmina Positivo Negativo 18 / 42 Rev. 4.0 - 18/07/03 User Manual...

  • Page 25: Technical Specifications

    TEX100 7. Technical Specifications 7.1 Mechanical Specifications Panel size 483 mm (19”) x 132.50 mm (5.20”) (3 HE) Depth 345 mm (13.7”) Weight 15 Kg Temperature range -10 °C ¸ +50 °C 7.2 Electrical Specifications General A.C. Supply 117-230 V ±10%, 50-60 Hz single phase Power consuption approx.230W...
  • Page 26 TEX100 Pilot tone level -20dBm adjustble Number of SCA inputs SCA input impedance 1KOhm unbalanced SCA input level 0dBm per ±7.5KHz of deviation SCA input response ±0.5dBm from 40KHz to 100KHz 20 / 42 Rev. 4.0 - 18/07/03 User Manual...

  • Page 27: Identification And Access To The Modules

    TEX100 8. Identification and Access to the Modules 8.1 Modules Identification The TEX100 is composed of different modules wired between them with connectors, allowing for easy servicing or module substitution. 8.1.1 Bottom view The figure below shows the upper view of the device with the indication of the different components.
  • Page 28 TEX100 8.1.2 Upper view The figure below shows the bottom view of the device with the indication of the different components. [1] Power amplifier card [2] Low pass filter [3] Audio input card [4] Main card [5] Frequency selector card...

  • Page 29: Removal Of The Modules

    TEX100 8.2 Removal of the Modules NOTE: When the exciter is operated with the cover removed, hazardous voltages and heavy current are accessible. Ensure all primary power is disconnected from the exciter before attempting equipment maintenance. To reinstall the card is enough to execute operations sequence in the opposite way.
  • Page 30 TEX100 8.2.4 Main card replacement Open the top cover of the unit. • • Disconnects connector JP1, JP2 , JP4 and CN1 • Unscrew the fixing nuts of the main card on the internal chassis. • Remove the card. 8.2.5 Audio input card replacement Open the bottom cover of the unit.
  • Page 31 TEX100 • Disconnect the faston CN4. • Remove the card paying careful attention to the various leds and adjustments. 8.2.8 Frequency selector card replacement • Open the top and bottom covers of the unit. • Unscrew the four fixing screws of the front panel.
  • Page 32 TEX100 • Unscrew the fixing screws of the two connectors on the rear panel. • Remove the card. 8.2.13 Fan replacemement • Open the top and bottom covers of the unit. • Unscrew the fixing screws of the rear panel to ease fan removal, paying attention to connecting wires.

  • Page 33: Operations Theory

    TEX100 9. Operations Theory The figure shows the block diagrams of TEX100 (fig. 9.1) and the TEX100/S (fig. 9.2). The blocks are described in the following chapter: figure 9.1 figure 9.2 User Manual Rev. 4.0 - 18/07/03 27 / 42...

  • Page 34: Power Supply

    An appropriate connector makes available outside the equipment the main electrical operation parameters of the exciter for possible remote controls. 9.3 Mixer board / stereo coder (TEX100/S version) This card is situated in the lower part of the unit. 28 / 42 Rev.

  • Page 35: Amplificatore Di Potenza Rf

    TEX100 This card can work like stereo coder stereo or simple mixer of the various audio inputs; the operation way is selected through an appropriate control on the frontal panel. In stereo encoder mode, the 19KHz pilot tone is derived from a quartz crystal reference oscillator.

  • Page 36: Meter Card

    TEX100 9.5 Meter Card This card is situated centrally on the front panel. The card receives forward and reflected power signals from the power supply which, in turn, come from the final power stage. The stereo encoder card supplies deviation and left and right signal levels.

  • Page 37: Main Card

    TEX100 9.9 Main Card This card in placed in the upper-left part of the unit. The functionalities of the card can be subdivided in three sections: Audio, PLL and VCO. The Audio section takes the audio signal coming from mixer coder (for stereo version) that comes amplified and tried in order to compensate the distorsions caused from the varicap diodes and therefore inject in VCo section to execute the modulation.
  • Page 38 TEX100 This page was intentionally left blank 32 / 42 Rev. 4.0 - 18/07/03 User Manual...

  • Page 39: Calibration Procedure

    Check, using the modulation analyser regulated for peak measurement, that the deviation is 75 kHz; in couter case acts on the RV6 and RV7 trimmers on the actual TEX100 main card or on the trimmer RV1 of the VCO card in the previous version.
  • Page 40 Connect an audio generator to the Mono input or MPX. • figure 10.2 • Switch on TEX100, select a frequency at 98MHz and select 0dBm on the INPUT LEVEL selector (pilot tone inserted). • Connect a 50 Ohm, 100 W dummy load to the RF output.
  • Page 41 TEX100 10.1.3 RF power amplifier module adjustment No calibration is required after the replacement of this card. 10.1.4 Power supply adjustment No calibration is required after the replacement of these two cards (Main power supply and switching power supply). 10.1.5 Audio input card adjustment No calibration is required after the replacement of this card.
  • Page 42 TEX100 10.1.8 PLL card adjustment (old version) After having replaced the PLL card, carry out the following procedure (see the setup below): figurE10.4 Switch on the equipment and select the frequency of 98MHz. • • Wait 10 minutes to have thermal stabilization of the equipment.
  • Page 43 Adjust R2 to obtain a reading of 100W on external wattmeter. • Select with Meter Selector the FWD position. • Adjust trimmer R8 on METER card to read 100W on TEX100's analog meter. Internal VSWR Adjustment • Connect a 50 Ohm, 100 W dummy load to the RF output.
  • Page 44 • This adjustment it’s necessary when the TEX100 is connected as exciter or driver for a power amplifier. Therefore, it’s necessary to have on last amplifier of the system an output voltage proportional with antenna output reflected power and connect this signal to REMOTE2.
  • Page 45 TEX100 • Adjust output power at minimum turning PWR ADJ trimmer completely counterclockwise and then switch on the equipment. • Increase output power until 100W, turning PWR ADJ trimmer clockwise. User Manual Rev. 4.0 - 18/07/03 39 / 42...
  • Page 46 TEX100 • Tare R23 trime until the output power begin to decrease. • Tare R25 trime until the LED “SWR/TEMP” begin to flash. • Turn trimmer R23, until to have on pin 3 of U4 a voltage included between 265 and 275 mV.
  • Page 47 TEX100 10.1.9 Main card adjustment To tare the TEX100 main card must adjust the three trimmers present on the card. Like in the previous version of VCO card, is present a trimmer for the deviation regulation (RV7), one for the distortion regulation (RV6) and one for the polarization regulation of the varicap in order to obtain the minimum refuse in the entire frequency range (RV9).
  • Page 48 TEX100 In the case was necessary control or modify the positions of SW5 Dip-switch, for example after the substitution of the card, make reference to the table shown in continuation: F u n c t i o n E x t e r n a l r e f e r e n c e a t 1 0 M H z...

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Tex100/s

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